Elementary treatise on electricity and magnetism (1903)
Foster, George Carey, 1835-1919, Joubert, Jules François, 1834-1910. Traité élémentaire d'électricité, Porter, Alfred William, 1863- joint author · London, New York, Longmans, Green, and co. · leaf 156
ists (the Faraday dark space).As the pressure of the gas is made still smaller the strise disappear,the luminosity of the positive column decreases, while a second darkspace (the Crookes space) is seen to separate the velvet glow from thenegative terminal; the size of this space increases as the… … Fig. 87. 134 EFFECTS OF THE DISCHARGE [94- Faraday space. At the same time, especially if the teiminal beconcave, a stream of blue light (or green light if the gas is ladenwith mercury vapour) emanates in straight lines from the electrode,traverses the dark space and negative glow, and excites…
Electricity · Magnetism
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